﻿using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;

public partial class Validation : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {

        //验证分为服务端和客户端两种形式。服务器端验证是指将用户输入的信息全部发送到web服
        //务器进行验证；客户端验证是指利用Javascript脚本，在数据发送到服务器之前进行验证。

        //没有安装Jquery时，运行会报错，解决方法：
        //1.在属性页面，EnableClientScript设置为false,表示不启用客户端验证，一般不建议
        //默认EnableClientScript属性为True，需安装Jquery，
        //2.表示不采用介入式Javascript用于客户端验证，即只在服务端验证
        //UnobtrusiveValidationMode = UnobtrusiveValidationMode.None;

    }

    //服务端身份证验证，通过ServerValidate事件触发，此时，需要将完成验证功能
    //的代码包含在事件处理代码中
    protected void CustomValidator1_ServerValidate(object source, ServerValidateEventArgs args)
    {
        IDCardValidation v = new IDCardValidation();
        if (v.CheckIDCard(TbIDCard.Text))
        {
            args.IsValid = true;
        }
        else
        {
            args.IsValid = false;
        }
    }
}


/// <summary>  
/// 验证身份证号码类  
/// 来源:https://www.cnblogs.com/ChineseMoonGod/p/5193606.html
/// </summary>  
public class IDCardValidation
{
    /// <summary>  
    /// 验证身份证合理性  
    /// </summary>  
    /// <param name="Id"></param>  
    /// <returns></returns>  
    public bool CheckIDCard(string idNumber)
    {
        if (idNumber.Length == 18)
        {
            bool check = CheckIDCard18(idNumber);
            return check;
        }
        else if (idNumber.Length == 15)
        {
            bool check = CheckIDCard15(idNumber);
            return check;
        }
        else
        {
            return false;
        }
    }


    /// <summary>  
    /// 18位身份证号码验证  
    /// </summary>  
    private bool CheckIDCard18(string idNumber)
    {
        long n = 0;
        if (long.TryParse(idNumber.Remove(17), out n) == false
            || n < Math.Pow(10, 16) || long.TryParse(idNumber.Replace('x', '0').Replace('X', '0'), out n) == false)
        {
            return false;//数字验证  
        }
        string address = "11x22x35x44x53x12x23x36x45x54x13x31x37x46x61x14x32x41x50x62x15x33x42x51x63x21x34x43x52x64x65x71x81x82x91";
        if (address.IndexOf(idNumber.Remove(2)) == -1)
        {
            return false;//省份验证  
        }
        string birth = idNumber.Substring(6, 8).Insert(6, "-").Insert(4, "-");
        DateTime time = new DateTime();
        if (DateTime.TryParse(birth, out time) == false)
        {
            return false;//生日验证  
        }
        string[] arrVarifyCode = ("1,0,x,9,8,7,6,5,4,3,2").Split(',');
        string[] Wi = ("7,9,10,5,8,4,2,1,6,3,7,9,10,5,8,4,2").Split(',');
        char[] Ai = idNumber.Remove(17).ToCharArray();
        int sum = 0;
        for (int i = 0; i < 17; i++)
        {
            sum += int.Parse(Wi[i]) * int.Parse(Ai[i].ToString());
        }
        int y = -1;
        Math.DivRem(sum, 11, out y);
        if (arrVarifyCode[y] != idNumber.Substring(17, 1).ToLower())
        {
            return false;//校验码验证  
        }
        return true;//符合GB11643-1999标准  
    }


    /// <summary>  
    /// 16位身份证号码验证  
    /// </summary>  
    private bool CheckIDCard15(string idNumber)
    {
        long n = 0;
        if (long.TryParse(idNumber, out n) == false || n < Math.Pow(10, 14))
        {
            return false;//数字验证  
        }
        string address = "11x22x35x44x53x12x23x36x45x54x13x31x37x46x61x14x32x41x50x62x15x33x42x51x63x21x34x43x52x64x65x71x81x82x91";
        if (address.IndexOf(idNumber.Remove(2)) == -1)
        {
            return false;//省份验证  
        }
        string birth = idNumber.Substring(6, 6).Insert(4, "-").Insert(2, "-");
        DateTime time = new DateTime();
        if (DateTime.TryParse(birth, out time) == false)
        {
            return false;//生日验证  
        }
        return true;
    }
}